You can change the time for yourself specifically via your profile > Preferences (Thats in your nav. bar) and to change it overall for everyone is in: Admin Panel >> General tab > General/config > Time. Save.

common Drogba, you're slipping on us buddy. It is very possible .He/she just wants to change the timezone/format to coincide with that in which he/she resides. There's a reason why that option exist in our Preferences .

You can change the time for yourself specifically via your profile > Preferences (Thats in your nav. bar) and to change it overall for everyone is in: Admin Panel >> General tab > General/config > Time. Save.